Purification of polybrominated biphenyl congeners. 1982

G A Dannan, and G J Mileski, and S D Aust

A commercial preparation of polybrominated biphenyls (Firemaster BP-6) was fractionated by preferential acetone solubilization and a number of PBB congeners were purified from the resulting fractions by repeated recrystallization, alumina adsorption column chromatography, and reversed-phase Lipidex-500 column chromatography. The applicability of reversed-phase Lipidex-5000 chromatography for the separation of highly structurally similar brominated biphenyl congeners that otherwise could not be separated by alumina chromatography or recrystallization was demonstrated. In total, seven congeners were purified, including one whose structure was assigned as 2,3,4,5,3',4'-hexabromobiphenyl.

UI MeSH Term Description Entries
D011075 Polybrominated Biphenyls Biphenyl compounds which are extensively brominated. Many of these compounds are toxic environmental pollutants. Polybromobiphenyl Compounds,Biphenyls, Polybrominated,Compounds, Polybromobiphenyl
D002845 Chromatography Techniques used to separate mixtures of substances based on differences in the relative affinities of the substances for mobile and stationary phases. A mobile phase (fluid or gas) passes through a column containing a stationary phase of porous solid or liquid coated on a solid support. Usage is both analytical for small amounts and preparative for bulk amounts. Chromatographies
D003460 Crystallization The formation of crystalline substances from solutions or melts. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed) Crystalline Polymorphs,Polymorphism, Crystallization,Crystal Growth,Polymorphic Crystals,Crystal, Polymorphic,Crystalline Polymorph,Crystallization Polymorphism,Crystallization Polymorphisms,Crystals, Polymorphic,Growth, Crystal,Polymorph, Crystalline,Polymorphic Crystal,Polymorphisms, Crystallization,Polymorphs, Crystalline
D001713 Biphenyl Compounds Whitish aromatic crystalline organic compounds made up of two conjoined BENZENE rings. Compounds, Biphenyl

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